The standard front ring of the 3DSimoKit uses to much space around the nozzle.
A few months ago i printed it in PLA but it was bending after a few hour's.
I printed both model in PETG for testing if it withstand better on high temperature.
https://github.com/3dsimo/3dsimo_kit/blob/master/3Dmodels/STL/Front_Ring_Alt_1.stl
https://github.com/3dsimo/3dsimo_kit/blob/master/3Dmodels/STL/Front_Ring_Alt_2.stl
The author hasn't provided the model origin yet.